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DRBD分布式复制块设备drbd83.x86_64 8.3.15-2.el5.centos extras kmo
10.10.10.20：监控端10.10.10.21：主10.10.10.22：主10.10.10.23：从10.10.10.24：从yum -y install mysql mysql-serverservice mysqld startyum -y install mysql-mmm*useradd --comment "MMM Script owner" --shell /sbin/nolo
序列随机数statcp /etc/skel/. /test/ -rfcp -Rvpvim0 $ gg G gg=G命令行快捷键Ctrl + u 删除当前到行首Ctrl + k 删除当前到行尾Ctrl + a 跳转行首Ctrl + e 跳转行尾Ctrl + s 解救-->Ctrl + qv VCtrl + shift + c 复制Ctrl + shift + v 粘贴ntpdate
查看内存页getconf PAGE_SIZEipcsMySQL常用选项mysqldump -q --lock-tables --single-transaction mysqldump -wmysqldump 时区：--tz-utc日期时间类型推荐：TIMESTAMPsysbench:Installing:See the file INSTALL for generic installation
源码安装svn先卸载低版本wget http://mirrors.hust.edu.cn/apache//apr/apr-1.5.2.tar.bz2wget http://mirrors.hust.edu.cn/apache//apr/apr-util-1.5.4.tar.bz2wget http://mirrors.hust.edu.cn/apache//apr/apr-iconv-1.2.1.
使用TCMalloc 优化MySQLhttp://download.savannah.gnu.org/releases/libunwind/libunwind-1.1.tar.gzhttp://gperftools.googlecode.com/files/gperftools-2.1.tar.gz参照MySQL管理之道 19页进行安装tar -xf libunwind-1.1.tar.gzcd
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo wget http://mirrors.kernel.org/fedo
http://www.cnblogs.com/welkinwalker/archive/2010/02/13/1668002.htmlhttp://oyqiaojin.blog.163.com/blog/static/59452565201132610621747/将光盘挂载 cp RPMS目录下的所有RPM包到/yumcreaterepo /yumvim /etc/yum.repos.d/loc
通过Xmanager 访问Linux 远程桌面。操作系统原本安装了图形界面gdmsetup设置remote 和security 即可
[Server]name=Serverbaseurl=file:///yum/Serverenabled=1gpgcheck=0[VT]name=VTbaseurl=file:///yum/VTenabled=1gpgcheck=0[Cluster]name=Clusterbaseurl=file:///yum/Clusterenabled=1gpgcheck=0[ClusterStorage]n
报错：warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 1e5e0159解决：rpm --import /etc/pki/rpm-gpg/RPM*报错：ORA-12705: Cannot access NLS data files or invalid environment specified解决：Linux下
man grep grep -C 5 "error" /var/log/sysloggrep -A 5 "error" /var/log/sysloggrep -B 5 "error" /var/log/syslog
1.sudo apt-get purge g++ nload gdb make nginx php5-fpm php5-cli php5-mysqlnd php5-json php5-curl php5-gd php5-mcrypt mysql-server spawn-fcgi2.sudo apt-get autoremove3.sudo apt-get autoclean4.sudo apt-
Ubuntu中/etc/resolv.conf 重启后nameserver 会被清空解决方法一sudo vim /etc/resolvconf/resolv.conf.d/basenameserver 8.8.8.8nameserver 8.8.4.4解决方法二sudo vim /etc/network/interfacesdns-nameservers 8.8.8.8 8.8.4.4
vi /home/oracle/.bash_profile在末尾加上export EDITOR=vi重点：EDITOR 必须大写，等号两边不能有空格
CLOSED :初始状态LISTEN :可以接受连接ESTABLISHED :已经建立了连接SYN_SENT :主动发起连接SYN_RCVD :收到了对方发起的主动连接FIN_WAI
1.以ROOT登录2.检查RAM 和swap3.软件binutils compat-libstdc++ elfutils-libelf elfutils-libelf-devel elfutils-libelf-devel-static gcc gcc-c++ glibc glibc-common glibc-devel glibc-headerskernel-headers ksh
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